So this is what I got as my Standard Deviation after plugging in the numbers:
So I Subtracted the two Standard Deviations (85.36-83.83)=1.53, but that is not the answer apparently. What am I doing wrong?
So this is what I got as my Standard Deviation after plugging in the numbers: So...
please help with parts a - i!! thankyou and check roundings please!! Question Help O A supermarket chan wants to know if the "buy one got one free campaign increases customer trafic enough to the cost of the program For each of 10 stores they select two days at random to run the best for one of those days selected by a confil, the program will be in tot They want to test the typothesis that there is no mean...
Please Help A supermarket chain wants to know if its "buy one, get one free" campaign increases customer traffic enough to justify the cost of the program. For each of 5 stores it selects two days to run the test. For one of those days the program will be in effect. At 1% significance level, test the claim that the program increases traffic. Use t-distribution. For parts (a), (b), (c), round your answers to 2 decimal places. (a) ¯dd¯ =...
Find the indicated score. The graph depicts the standard normal distribution with mean and standard deviation 1 Click to view page 1o the table Click to view page of the The indicated z score is Round to two decimal places as needed Find the area of the shaded region. The graph to the right depicts I scores of adults and those scores we normally distributed with a mean of 100 and a standard deviation of 15 Click to view.age 1...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you The reading speed of second grade students in a large city is approximately normal, with a mean of 92 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through Click here to view the standard normal distribution table (page 1 Click here to view the standard normal distribution table lage 2). Interpret this probability. Select...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you X 8.1.21 Question Help The reading speed of second grade students in a large city is approximately normal, with a mean of 92 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through 1) Click here to view the standard normal distribution table (page 11 Click here to view the standard normal distribution table (page...
Person got it wrong the first time I posted this. Iconic memory is a type of memory that holds visual information for about half a second (0.5 seconds). To demonstrate this type of memory, participants were shown three rows of four letters for 50 milliseconds. They were then asked to recall as many letters as possible, with a 0-, 0.5-, or 1.0-second delay before responding. Researchers hypothesized that longer delays would result in poorer recall. The number of letters correctly...
nswer the following TWO questions uestion (1) (30 Marks A) (5 Marks) The time required to build a computer is normally distributed with a mean of 50 minutes and a standard deviation of 10 minutes. What is the probability that a computer is assembled in a time between 45 and 60 minutes? B) (5 Marks) It was noted that the amount of oil in each "32-ounce" bottle is actually a normally distributed random variable, with a mean of 32.2 ounces...
A study was undertaken to see how accurate food labeling for calories on food that is considered "reduced calorie". The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. The data is in the following table ("Calories datafile," 2013). Table: Percent Differences Between Measured and Labeled Food National Advertised Regionally Distributed Locally...
I got the first 2 parts, but I cant figure out the percentage of men that fit this table. please help. Scbre: 92.94 70, T5.... Question Help out A common design requirement is that an environment must fit the range of people who fall between the 5h percentile for women and the 95th percentile for men. In designing an assembly work table, the sitting knee height must be considered, which is the distance from the bottom of the feet to...
Please help me with my whole assigment 1. [7 marks in total] A statistics practitioner took a random sample of 31 observations from a normal population. The sample standard deviation is 34 and the sample mean is 97. Note: For each confidence interval, enter your answer in the form (LCL", UCL"). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Diagram Confidence interval B. Estimate the population mean with...